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What does the MLS use to overcome the weakness of ILS system?

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What does the MLS use to overcome the weakness of ILS system?

(a) Narrow beam width antennas

(b) More power

(c) Filers for separating noise

(d) Array of antennas

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Question is taken from Microwave Landing System in division Landing Systems & Air-Traffic Management of Avionics

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The correct answer is (a) Narrow beam width antennas

Explanation: The main weakness of the ILS system is eliminated by using narrow beam width antennas which are physically small since the frequency is high. As frequency increases antenna size decreases.

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